View source for Q-dos 3-Dimensional Lens System

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|image_source= https://www.flickr.com/photos/35989778@N05/5628252140/in/pool-camerawiki/
|image= https://live.staticflickr.com/5067/5628252140_16149a39ed.jpg
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|image_text= Vivitar series 1 3D lens QDOS
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|image_rights=  with permission
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'''Q-dos''' is [[Vivitar]] branded system for producing pseudo [[Stereo|stereo anaglyphic]] photos using a conventional 35mm SLR camera in combination with a specialized lens. The lens included a switch which would optionally insert half red, half cyan [[Dichroic_filter#Dichroic_filters|dichroic filters]] internally. The filters added color fringing in out-of-focus areas of the photo. The resulting photos, when viewed with red/cyan 3D glasses, produced a minimal 3 dimensional visual effect. When viewed without 3D glasses the photos showed only a faint red and cyan tints but otherwise looked normal. Shooting with a small aperture killed the effect due to the increased depth of field. The effect was most pronounced for macro photographs with shallow depth of field.<ref>[http://books.google.com/books?id=n9mzSmw-rC4C&lpg=PA118&dq=q-dos%203%20dimensional%20lens&pg=PA118#v=onepage&q=q-dos%203%20dimensional%20lens&f=false The Third Dimension: Vivid Vivitar, American Photo, Nov-Dec, 1992, p118]</ref>

==History==

The Q-dos system was developed in 1991 and introduced in 1992 but was discontinued later due to lack of consumer interest.

==List of Q-dos Lenses==
* [[Series 1 70-210mm f/2.8-4 VMC Macro Focusing Zoom (Cosina)|Series 1 70-210mm f/2.8-4 VMC Macro Focusing Zoom]], 58mm filter size (Cosina)

==Notes==
<references/>

==Links==
* [http://photo.net/classic-cameras-forum/00Nngp Anaglyphic 3-D with a Vivitar Series 1 Q-DOS lens]
* [http://photo.net/classic-cameras-forum/00YNMx The Contax 139Q, Vivitar Series 1 Qdos lens, and "The Gibraltar of the West"]

[[Category:Vivitar]]
[[Category:Lenses]]